The Salt March, also known as the Dandi March, began on 12 March 1930 under the leadership of Mahatma Gandhi. It was a non-violent protest against the British monopoly on salt and a symbolic defiance of British authority.
Thus, the Salt March was a turning point that brought Mahatma Gandhi and the Indian independence movement into global consciousness.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?